Question

The Bonneville Salt Flats, located in Utah near the border
with Nevada, not far from interstate I-80, cover an area of
over 30000 acres. A race car driver on the Flats first heads
north for 5.05 km, then makes a sharp turn and heads
southwest
for 1.73 km, then makes another turn and heads east for
3.87 km. How far is she from where she started?